Kumo-Kumo is an arachnid-based Badnik created by Dr. Eggman. Appearing in Sonic CD's Quartz Quadrant stage, these mechanical spiders jump up and down on the spot with their spring-loaded legs. If an enemy gets too close, they will launch webbing from their backsides to impede the enemy's progress and leave them vulnerable to environmental hazards or attack from other Badniks.